This paper outlines a method for using an active steering system with two electrical actuators (one power-steering actuator and one superposition actuator) in order to manipulate the steering rack position without torque feedback to the steering wheel. To this effect, the power-steering actuator is used to implement a feed-forward control in order to compensate for the inertial effect introduced by the angle superposition. A rudimentary steering system model is used to derive the relevant transfer functions and assemble the control law for the superposition actuator. Experimental results of a research project at the BMW Group are included.
Issue Section:
Research Papers
References
1.
Tjønnås
, J.
, Miyasaka
, S.
, and Johansen
, T. A.
, 2010, “Stabilization of Automotive Vehicles Using Active Steering and Adaptive Brake Control Allocation
,” IEEE Trans. Control Syst. Technol.
, 18
(3
), pp. 545
–558
.2.
Fukato
, T.
, Miyasaka
, S.
, Mori
, K.
, Adachi
, N.
, and Osuka
, K.
, 2004, “Active Steering Systems Based on Model Reference Adaptive Nonlinear Control
,” Veh. Syst. Dyn.
, 42
(5
), pp. 301
–318
.3.
Benford
, H. L.
, and Leising
, M. B.
, 1981, “The Lever Analogy: A New Tool in Transmission Analysis
,” Society of Automotive Engineers
, Warrendale, PA
, SAE Technical Paper No. 810102.4.
Müller
, H. W.
, 1998, Die Umlaufgetriebe: Auslegung und vielseitige Anwendungen
, 2. berarb. und erw. Auflage., Springer
, Berlin
.5.
Müller
, J.
, 2010, “Active Toe-Compensation for By-Wire Steering Systems
,” Proceedings of AVEC10
.6.
Pick
, A. J.
, and Cole
, D. J.
, 2006, “Measurement of Driver Steering Torque Using Electromyography
,” ASME J. Dyn. Syst., Meas., Control
, 128
, pp. 960
–968
.7.
Pick
, A. J.
, and Cole
, D. J.
, 2007, “Dynamic Properties of a Driver’s Arms Holding a Steering Wheel
,” Proc. Inst. Mech. Eng., Part D (J. Automob. Eng.)
, 221
, pp. 1475
–1486
.8.
Pacejka
, H. B.
, 1996, “The Tyre as a Vehicle Component
,” XXVI FISITA-Congress
, Prague.9.
Dahl
, P.
, 1968, “A Solid Friction Model,” Technical Report No. TOR-0158H310718I-1.Copyright © 2012
by American Society of Mechanical Engineers
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